CVE-2026-42387

Summary

A malicious authoritative server can send a crafted zone via the ZoneToCache function that leads to a crash of the Recursor due to insuffcient input validation.

Affected Software

VendorProductVersion RangeStatus
PowerDNSRecursor5.2.0 < 5.2.11affected
PowerDNSRecursor5.3.0 < 5.3.8affected
PowerDNSRecursor5.4.0 < 5.4.3affected

Weaknesses

  • Improper Input Validation

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References